2013 Engine Kits & Rotating Assemblies Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

Summit Racing™ Pro LS Piston and Rod Kits SUM-PR400308

Pro LS 4340 Piston and Rod Kit, 408 Cid., 4.030 bore, 4.000 stroke, 6.125 rod, 8cc dish, 11.1:1 @ 65cc, 10.6:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400308

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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR4007021

Pro LS 4340 Piston and Rod Kit, 416 Cid., 4.070 bore, 4.000 stroke, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4007021

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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR400756

Pro LS 4340 Piston and Rod Kit, 417 Cid., 4.075 bore, 4.000 stroke, 6.125 rod, 6cc dish, 11.5:1 @ 65cc, 11:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400756

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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR407855

Pro LS 4340 Piston and Rod Kit, 360 Cid., 3.785 bore, 4.000 stroke, 6.125 rod, 5cc dish, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR407855

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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR408205

Pro LS 4340 Piston and Rod Kit, 367 Cid., 3.820 bore, 4.000 stroke, 6.125 rod, 5cc dish, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR408205

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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR409035

Pro LS 4340 Piston and Rod Kit, 383 Cid., 3.903 bore, 4.000 stroke, 6.125 rod, 5cc dish, 10.9:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings

Part Number: SUM-PR409035

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Summit Racing™ Pro LS 6.0L Rotating Assemblies SUM-R243600512

Pro LS 4340 Rotating Assembly, 365 Cid., 4.005 bore, 3.622 stroke, 24X, 6.098 rod,12cc dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R243600512

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Summit Racing™ Pro LS Piston and Rod Kits SUM-PR360402

Pro LS Piston and Rod Kit, 371 Cid., 4.040 bore, 3.622 stroke, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR360402

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Summit Racing™ Pro LS 6.0L Rotating Assemblies SUM-R583600512

Pro LS 4340 Rotating Assembly, 365 Cid., 4.005 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583600512

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Summit Racing™ Pro LS 6.0L Rotating Assemblies SUM-R58360302

Pro LS Rotating Assembly, 370 Cid., 4.030 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360302

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Summit Racing™ Pro LS 6.0L Rotating Assemblies SUM-R583604012

Pro LS 4340 Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.8:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583604012

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Summit Racing™ Pro LS 6.0L Rotating Assemblies SUM-R58360402

Pro LS Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360402

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Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R58368102

Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 58x, 6.098 rod, 2cc dome, 11:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings, H Bearing

Part Number: SUM-R58368102

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Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R244007521

Pro LS 4340 Rotating Assembly, 417 Cid., 4.075 bore, 4.000 stroke, 24X, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R244007521

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Summit Racing™ Pro LS 6.2L Rotating Assemblies SUM-R5836L0652

Pro LS 4340 Rotating Assembly, 376 Cid., 4.065 bore, 3.622 stroke, 58x, 6.125 rod, 2cc dome, 11.6:1 @ 65cc, 11:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R5836L0652

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Summit Racing™ Pro LS 5.3L Rotating Assemblies SUM-R24407805

Pro LS 4340 Rotating Assembly, 359 Cid., 3.780 bore, 4.000 stroke, 24X, 6.125 rod, 5cc dish, 10.9:1 @ 61cc, 10.4:1 @ 65cc, File-Fit Rings, H Bearings

Part Number: SUM-R24407805

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Namura Technologies Top-End Repair Kits NA-50080-BK

Repair Kit, Top End, 79.960mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50080-BK

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Cylinder Works Standard Bore Cylinder Kits for 2012-2023 CRF150R, CRF150R EXPERT - 422-10004K2

STD BORE KIT

Part Number: CLW-10004-K02

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Cylinder Works Standard Bore Cylinder Kits for 2013-2016 CRF450R - 422-10006K2

STD BORE KIT

Part Number: CLW-10006-K02

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Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits HR00113

BOTTOM END KIT Polaris

Part Number: HRI-HR00113

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits HR00116

BOTTOM END KIT Polaris

Part Number: HRI-HR00116

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits CBK0192

Gasket Kit BOTTOM END KIT BOTTOM END KIT

Part Number: HRI-CBK0192

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Vertex Replica Piston Kits 24264B

VERTEX PISTON KIT

Part Number: VPX-24264B

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Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

Vertex Replica Piston Kits 24265B

VERTEX PISTON KIT-FORGED

Part Number: VPX-24265B

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Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

Vertex Top-End Piston Kits VTKTC23908A

VERTEX PISTON KIT

Part Number: VPX-VTKTC23908A

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Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today